The calendar shows 2 March 2472 as a Monday. It will actually be a Wednesday.
One of the walls inside the TARDIS has fake roundalls which were printed like a billboard poster or wallpaper.
Considering how easy it has been for the Time Lords to interfere and even apprehend the Doctor on his travels, there's no reason why they don't use their powers to apprehend the Master themselves.
The Doctor pronounces the space/time *continuum* as "continium".